日韩亚洲综合av在线播放_国产A级毛片久久久精品毛片_欧美日韩性无码专区_性欧美老妇另类XXXX_浪货跪下给我好好含着羞辱调教

　　Product type: Disc aluminum anode

　　Scope of application:

　　Aluminum alloy sacrificial anode is suitable for cathodic protection against corrosion of metals in ships, machinery and equipment,

　　Marine engineering and harbor facilities in seawater medium, as well as pipelines and cables in sea mud.

　　Detailed introduction:

　　The most commonly used aluminum alloy anodes are Al-Zn-In and Al-Zn-Hg anodes, which are suitable for cathodic protection of structures such as ships,

　　wharves, ports and Marine facilities, seawater cooling water systems and water storage tanks. Aluminum alloy anode production gb4948-2002 "aluminum - zinc - indium alloy sacrifice anode".